Classifications

• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
  • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
  • C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
  • C04B41/49—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes
  • C04B41/4905—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon
  • C04B41/4922—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon applied to the substrate as monomers, i.e. as organosilanes RnSiX4-n, e.g. alkyltrialkoxysilane, dialkyldialkoxysilane
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
  • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
  • B27K3/02—Processes; Apparatus
  • B27K3/15—Impregnating involving polymerisation including use of polymer-containing impregnating agents
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
  • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
  • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
  • B27K3/02—Processes; Apparatus
  • B27K3/0207—Pretreatment of wood before impregnation
  • B27K3/0214—Drying

Definitions

• the invention relates to a process for the preservative impregnation of the pore system of an object, in particular of a rock, with a hydrolysis / condensation-reactive preservative, in particular with silicic acid ester, with or without a hydrophobic additive, and pure water repellents.
• the users of these preservatives are generally satisfied with penetration depths of a few mm or cm. For this very low requirement, it is sufficient that only the pores of the near-surface region are free of water so far that at least a small amount of the preservative can penetrate into the pores of the near-surface region, Since in such an in situ application, the offer of the preservative usually only a few minutes, it is not considered harmful if hydrolysis in this range begins very rapidly.
• the water saturation of a rock takes place in several phases.
• the first water uptake takes place via the large capillaries and possibly existing cracks.
• the smaller capillaries suck the Water out of the large capillaries and fill up to full saturation.
• the larger capillaries are thus available for receiving a further supply of water.
• a drying process proceeds in several, essentially in 3 phases.
• the first phase the near-surface water is released into the ambient air.
• the object of the invention is to improve the method of the type mentioned above so that in simple process steps, a secure uniform deep soaking or full impregnation of the object in particular of the rock can be achieved.
• the procedure consists of two steps.
• the second step is the actual soaking process.
• the pore space is dried with suitable drying methods into the core.
• suitable drying methods are all common methods - e.g. air conditioned convection / exhaust air ovens, vacuum chambers, with or without cold traps.
• the aim of this preparation step is to create a situation that, on the one hand, there is no free water in the pores, but on the other hand, it is ensured that 2 to 3 molecule layers of water are available on the pore walls.
• the water saturation to be set is determined by the specific surface area and the pore radius distribution of the rock and can be derived from the Kelvin-Thomson equation.
• the first step in the preparation would consist of two phases.
• the complete dehydration is achieved when at a temperature of about 30 ° C in a well a relative humidity of max. 15%, corresponding to a temperature of e.g. 65 ° C is a rel. Humidity of ⁇ 9% has set.
• the preservative is offered to the object with suitable impregnation methods in such a way that the desired deep soak up to full saturation is achieved.
• the object in particular the stone, may be surrounded by a foil, which preferably forms an airtight seal to the outside
• an airtight sealed film package can be used with the addition of the salts corresponding to the desired climate.
• hydrophobizing agents are based on silane or silanol and react by hydrolysis and subsequent polycondensation.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Ceramic Engineering (AREA)
• Materials Engineering (AREA)
• Structural Engineering (AREA)
• Organic Chemistry (AREA)
• Life Sciences & Earth Sciences (AREA)
• Wood Science & Technology (AREA)
• Forests & Forestry (AREA)
• Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
• Solid-Sorbent Or Filter-Aiding Compositions (AREA)
• Drying Of Solid Materials (AREA)

Applications Claiming Priority (1)

Publications (2)

Family

ID=38283959

Family Applications (1)

Country Status (2)

Cited By (1)

Family Cites Families (6)

• 2006
  • 2006-05-24 DE DE200610024335 patent/DE102006024335A1/de not_active Withdrawn
• 2007
  • 2007-05-15 EP EP07009670A patent/EP1860083A3/fr not_active Withdrawn

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